Carbureter.



G. G. LEONARD. OABBURETER.

Arrnwu'mx rILnn JAN. 12. 1909.

941,424. Patented Nov. 30, 1909.

"HHHHHHHW W" I6 I a my W02 0. LEOHABD, OF

SAVANNAH, NEW YORK- GARBUBETEE.

Specification Letters Patent.

Patented Nov. 30, 1909.

Amllcatlon filed January 12, 1809. Serial Ioglfifl.

To all whom it may concern:

' Be it known that I, Cnmnxon G. [mox- ARD, a citizen of the United States residi at Savannah, in the county of Wii as an State of New York, have invente certain new and useful Improvements in Carbureters, of which the following is a specification.

The principal object of m invention 1s to provide a new and unprov device for nu xmg hydrocarbon vapor with air for use in explosion engines.

A further object of my invention is provide a device of the class referred to in which the admixture of hydrocarbon vapor with the air shall depend upon the d e of suction in the air inlet passageslea to the explosion engine.

M invention resides in the structure b whi these objects are accomplished as w be made more fully up rent in the following specification and aims when taken in connection with the accompanying drawings in which- Figure 1 is a general sectional view of my improved carbureter. Figs. 2 and 3 are sectime taken on the corres ndingly numbered lines in Fig. 1, and ig. 4 18 a perspective view of a detail.

In that particular embodiment of my invention which I have chosen to illustrate in the drawings, the carburetor as a whole comprises two adjacent chambers and 16 with an intervening partition wall 17. The gasolene inlet connection 18 leads to the valve seat 19 in the bottom of the chamber 16. This valve seat has a co-acting valve 20 mounted on a stem 21-27, the lower end of this stem 21 being mounted in the guide socket 23 in the head 22 which screws into and closes the valve chamber 18'. The upper end 27 of the valve stem carries a. float 24 within the chamber 16. The cap or cover 25 closes the chamber 16 above and has a guide hole 26 in its center through which the stem 27 projects.

Through the intermediate 17 at about the middle of the is an opening 28 which leads chamber 29, the latter bein the radial arms 30 from t o well of the chamber 15. Two series of circumferentially arranged holes 31 extend upwardly from the annular chamber 20 and are odnptcd to be closed or opened successively by the valve 32. This valve consists of two sector- Ra rtition wall eight thereof to the annular supported by shaped wiri is 34 and at its center is a square hole 33. e ripheral edges of the valve 32 are turned own around the walls of the annular chamber 29, as indicated by the reference character 34'.

The chamber 15 is closed above by the screw cap 35 and below by the screw cap 36 which forms a seat for the air inlet valve 45. From the top of the chamber 15 through the side wall thereof leads the conduit 37 to the intake of the ex losive engine. The valve 38 operated by t e handle 39 is adapted to control the quantity of air passing to the engine intake.

The square valve stem the correspondingly squa bushing 42 which is fixed in the head 35 b means of the set-screw 43. Where this va ve stem passes through the square hole 33 in the valve 32, it is given a twist, as indicated by the reference numeral 41. The compression spring 44 acts between the head 35 and the valve 32 to hold the latter down on its seat. The air inlet valve 45 is clam ed by means of the nut 46 against the shou der 49 on the valve stem 40. The compression spring 47 acts between the head 36 and the nut *8 on the valve stem 40 to hold the valve 45 down on its seat.

The gasolene is supplied through the inlet passage 18 under a moderate ressure or end and flows thence up throu the valve seat 19 into the chamber 16, the ranch pass e 28 and the annular chamber 29. As W1 1 be readily understood the gasolene will rise in the chamber 16 to some level above the opening 28 and will then raise the float 24 and cause the valve member 20 to close the valve opening 19. Thus it will be seen that the float maintains the gusolene at a certain definite level in the chamber 16, which level will be above the branch opening 28.

The quantity of air passing through the carburetor to the on by the valve 38. As t 40 asses through inc may be regulate ie engine piston draws in air through the air intake this reduces the pressure of the air within the chamber 15 so that the atmospheric pressure on the under side of the valve 45 opens it, thus )ermittin atmospheric air to rush upwurdl throu i the chamber 15 and out through t 1e conduit 37. The raising of the valve 45 will also raise the valve stem 40 against the pressure of the spring 47. Thus it will be seen that an increase of suction will exert an Increased force on the spring '17 and increase the height to which the valve 45 and the stem 40 are raised. The shaft 40 is prevented from rotation by the square bushing 42 and as its twisted art 41 ascends it necessarily rotates the va ve 32, thus successively uncovering the perforations 31. Thus it will be seen that an increased suction through the carburetor, which meadlan increased su ply of air going to the engine, has the e ect of opening an increased number of the perforations 81; in this way the carburetor contributes the proper proportion of gasolene to be mixed with the air. In this way I obtain a perfect mixture of hydrocarbon va or and air at all speeds of the engine and I db this without the necessity of employing needle valves or other delicate or com 11- eated mechanisms. With mfy a paratus 1t is practically impossible to 005 the engine with gasolene as may be the case where the gasolene supply is controlled more or less independently of the air suction.

It will be seen that my invention comprises an air conduit which in the embodiment. of the invention disclosed in the drawings extends upwardly through the chamber 15 and the outlet 37 therefrom, and a branch conduit for asolene which in the same disclosed embodnnent extends from the fitting 18 through the valve seat 19, chamber 16, passage 28, annular chamber 29 to the outlet perforations 31. It will also be seen that in the embodiment of my invention disclosed in the drawings, the valve 45 is a suction valve lying across the air conduit 15. Furthermore it will be seen that in aspects my invention com rises the provision of an extended outlet the solene conduit into the air conduit. In t e particular embodiment of my invention shown in the drawin this extended outlet consists of the series of perforations 31.

It is advantageous to have the outlet opening from the gasolene conduit into the I111 conduit elongated in the direction of movement of the valve coverin the same. In that form of the invention disclosed in the drawing this elongated outlet consists of a series of perforations, but it might have the form of a slot.

I claim:

1. In a carbureter, an air conduit, a gasolenc conduit opening bv a series of small holes into said air conduit, and a flat rotatable plate over the said holes, means responsive to the degree of suction iu the. air conduit, and an operating connection from said means to said plate to control the latter.

2. In a carburetor, an air conduit, It gasolene onduit opening into said air conduit a series of small holes, a flat rotatable p atc over the holes, a suction vulva across the said air conduit, and a mechanical connection between the said valve and plate constructed and arranged H0 that the dim placement of the valve will open or close the holes in succession.

3. In a carburetor, an air conduit, a asolene conduit opcnin into said air con uit by an outlet extende so as to have the general shape of an arc of a circumference, a rotatable plate over said outlet, means responsive to the degree of suction in the air conduit, and an operating connection from said means to said plate to control the latter.

4. In a carbureter, an air conduit, a solene conduit openin into the air con uit by an outlet extende so as to have the general shape of an arc of a circumference, a rotatable plate over the said outlet, a saction valve across the said air conduit, and a mechanical connection from the valve to the plate constructed and arranged to 1'0 tate the plate as the said valve is displaced.

5. In a carburetor, an air conduit, a gasolene conduit opening therein by an outlet extended so as to have the general shape of an arc of a circumference, a rotatable plate over said outlet, a suction valve acrow the air conduit, a twisted stem engaging the said valve and plate whereb a 'splacement of the valve will rotate the plate.

6. In a carburetor, an air conduit, a. gas olene conduit opening therein by an outlet extended so as to have the general shape of an arc of a circumference,.a rotatable plate over said outlet, a suction valve across the air conduit, a twisted stem fixed to the said suction valve and passin loosely thro h the said late whereb displacement of t e 1 valve willrotate the p ate.

7. In a carburetor an air conduit, an annular gasolene chamber within said conduit having a series of perforations thr uzh the chamber wall, a rotatable plate adapted to 1 overlie the said perforations, and means depending upon the suction in the air conduit to rotate said )late and thereby successively open or close t to said perforations.

8. In a carburetor, an air conduit, an annular gasolene chamber axially arranged in the conduit and supported from the walls thereof, circmnferentullly arranged perforations in the walls of the said annular chamber, a rotatable plate adapted to succcsi ely open or close said perforations, a suction valve across the said air conduit, and a twisted stem engaging said valve and late whereby displacement of the valve wil rotate the plate.

ll. In a carburetor. an air conduit, an annular gasolcuu chamber axially arrnn ed in the conduit with perforations throng i the cluuuhcr wall, a plate overlying said per-- fi'u'atious, a twisted rod loosely engaging the plain, means to hold thu rod against rotation but permit reciprocation thereof, and n snot ion valve lixcd on said rod.

10. In a carlmrclcr, an air conduit, an aunulur gusolouu chumlwr axially arranged in the conduit and havinp perforations through the chamber wall, a p ate ada ted to over 10 said perforations, a s ring to old said plate in place, a. non-czrc ar hole 1n the plate, a twisted rod passing through the hole and having a cross section correspondin to the shape of the hole, a guide for the to prevent rotation thereof, and a suction valve across the air conduit fixed upon said rod.

11. In a carburetor, an air conduit, a gasolene conduit opening therein by a series of small holes, a rotary valve adapted to open said holes in succession, means responsive to the degree of suction in the air conduit and an operating connection from said means to said late to control the said valve.

12. In a car ureter, an air conduit, an annular gasolene chamber within said conduit having an outlet extended so as to have the general shape of an arc of a circumference, a rotatable plate adapted to overlie said outlet, and means operated by the suction in the air conduit to rotate said plate and thereby gradually open and close the said outlet.

13. In a carburetor, an air conduit, 3. gasolene conduit leading into the air condult an annular chamber terminating the gaso ene conduit within the air conduit and opening therein by an outlet extended so as to have the general shape of an arc of a circumference, a sector shaped rotatable plate over said outlet, and means to rotate said plate 550 as to gradually open and close the out- 14. In a carbureter an air conduit, a lone conduit leading into the air conduit an annular chamber terminati the gllsoene conduit within the air conduit and opening therein by an outlet extended so as to have the general shape of an arc of a circumference, and a rotatable plate over said outlet adapted to be displaced so as to gradually uncover said opening.

15. In a carbureter, an air conduit, a gasolene conduit opening therein by an outlet extended so as to have the general shape of an arc of a circumfermce, a rotatable plate over said outlet, and a twisted stem engaging said plate whereby a longitudinal dis placement of the stem will rotate the plate.

16. In a carbureter, an air conduit, :1 gasolene condult opening therein by an outlet extended so as to have the general shape of an arc of a circumference, a rotatable sector shaped plate over said outlet, and a twisted stem engaging said plate whereby a longitudinal isplaeement of the stem will rotate the plate.

In testimony whereof, I have subscribed my name.

CLARENCE G. LEONARD. Witnesses:

Eonm'r N. LEONARD, Joan H. Newton. 

